Met a girl online from Christian-cafe last year. While we were "hands-off" at first, eventually we would have the most intense, passionate make-out sessions that beat any experience my parents had or anyone else I knew. We made out in park benches when a deer was running a cross and I never saw a deer running through a city park before. We made out in the back of my car and I sucked her breasts and fondled her up while doing so. She was shorter than I so she can lean on me while sitting. She had this cute face that I just enjoyed these sessions immensely. We made out in a island park near the city twice. Once during the night while bats were flying by and you only had the boat docks illuminated. It is just super-amazing experience. We loved each other as well and we would always say "I love you, I love you too, etc...." and hold hands in public or sitting over coffee.
Regretfully, I dumped her because I did some digging into her past with her ex-husband and felt slighted when we hung out with her friends.
So, in answer to your question....go to a city park, or nice romantic venue, or even on a parking lot bench...I think the venue has allot to do with putting a girl into a romantic mood. But be careful, as it becomes a painful memory since you can't get more if you break-up with the girl.